Another Martin ↠ Stiles Stilinski {Book One} || #Wattys2017

Ariel Martin is back in Beacon Hills. After living with her father, she finally decided that it's time to go back and live with her mother and sister. It's been a year since she was in Beacon Hills yet one thing is still with her. Her kind heart. On the first day, she meets someone new. A new best friend. The supernatural in Beacon Hills starts to bring in chaos.
What will happen when she goes behind her sister and talks to a special someone? What happens if she falls in love?
Teen Wolf {Season 1}

This confuses me. Does this mean Jackson's older than the rest. Because she says the reason they won the past three years is because of Jackson. Wouldn't that make him a Junior while the others are Sophomores?